DESCRIPTION
WIRING DIAGRAM
PROCEDURE
1. |
CHECK MICROPHONE (OPERATION CHECK) |
(a) Enter the "Microphone Check" screen. Refer to Check Microphone in Operation Check (See page
|
|
(b) When a voice is input into the microphone, check that the microphone input level meter changes according to the input voice.
OK:
Check result is normal.
OK | ![]() |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
|
2. |
CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER ASSEMBLY - INNER REAR VIEW MIRROR ASSEMBLY (AMPLIFIER MICROPHONE ASSEMBLY)) |
(a) Disconnect the E40 navigation receiver assembly connector.
(b) Disconnect the P12 inner rear view mirror assembly (amplifier microphone assembly) connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
E40-4 (MACC) - P12-9 (ACC) |
Always |
Below 1 Ω |
E40-5 (MIN+) - P12-11 (MIC+) |
Always |
Below 1 Ω |
E40-19 (MIN-) - P12-12 (MIC-) |
Always |
Below 1 Ω |
E40-6 (SNS2) - P12-10 (SGND) |
Always |
Below 1 Ω |
E40-4 (MACC) - Body ground |
Always |
10 kΩ or higher |
E40-5 (MIN+) - Body ground |
Always |
10 kΩ or higher |
E40-19 (MIN-) - Body ground |
Always |
10 kΩ or higher |
E40-18 (SGND) - Body ground |
Always |
10 kΩ or higher |
E40-6 (SNS2) - Body ground |
Always |
10 kΩ or higher |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
3. |
INSPECT NAVIGATION RECEIVER ASSEMBLY |
(a) Reconnect the E40 navigation receiver assembly connector.
(b) Reconnect the P12 inner rear view mirror assembly (amplifier microphone assembly) connector.
(c) Measure the voltage according to the value(s) in the table below. Standard Voltage:
|
|
(d) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
E40-18 (SGND) - Body ground |
Always |
Below 1 Ω |
E40-19 (MIN-) - Body ground |
Always |
Below 1 Ω |
*a |
Component with harness connected (Navigation Receiver Assembly) |
NG | ![]() |
REPLACE NAVIGATION RECEIVER ASSEMBLY |
|
4. |
INSPECT INNER REAR VIEW MIRROR ASSEMBLY (AMPLIFIER MICROPHONE ASSEMBLY) |
(a) Remove the inner rear view mirror assembly (amplifier microphone assembly)
(See page ).
(b) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
NG | ![]() |
REPLACE INNER REAR VIEW MIRROR ASSEMBLY (AMPLIFIER MICROPHONE ASSEMBLY) |
|
5. |
INSPECT INNER REAR VIEW MIRROR ASSEMBLY (AMPLIFIER MICROPHONE ASSEMBLY) |
(a) Reconnect the E40 navigation receiver assembly connector.
(b) Reconnect the P12 inner rear view mirror assembly (amplifier microphone assembly) connector.
(c) Turn the ignition switch to ACC.
(d) Connect an oscilloscope to terminals 11 (MIC+) and 12 (MIC-) of the P12 inner rear view mirror assembly (amplifier microphone assembly) connector. |
|
(e) Check the waveform of the amplifier microphone assembly using the oscilloscope.
Result |
Proceed to |
---|---|
A waveform synchronized with the voice input to the inner rear view mirror assembly (amplifier microphone assembly) is output |
A |
A waveform synchronized with the voice input to the inner rear view mirror assembly (amplifier microphone assembly) is not output |
B |
*a |
Component with harness connected (Inner Rear View Mirror Assembly (Amplifier Microphone Assembly)) |
A | ![]() |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
B | ![]() |
REPLACE INNER REAR VIEW MIRROR ASSEMBLY (AMPLIFIER MICROPHONE ASSEMBLY) |
Lost Communication with Front Airbag Sensor RH (B1612/83,B1613/83)
DESCRIPTION
The front airbag sensor RH circuit consists of the center airbag sensor assembly
and front airbag sensor RH.
The front airbag sensor RH detects impacts to the vehicle and sends signals to
the center airbag sensor assembly to determine if the ...
USB Audio System Recognition/Play Error
DESCRIPTION
When a USB device or "iPod" is connected to the USB jack of the No. 1 stereo
jack adapter assembly, it must have playable files. The device must also communicate
with and be recognized by the navigation receiver assembly. This diagno ...
Terminals Of Ecu
TERMINALS OF ECU
1. OCCUPANT CLASSIFICATION ECU (for Power Seat)
Terminal No. (Symbol)
Wiring Color
Terminal Description
Condition
Specification
S12-1 (+B) - S12-3 (GND)
GR ...